package com.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.common.constant.AuthConstant;
import com.common.exception.BizCodeEnume;
import com.common.utils.R;
import com.common.vo.MemberRespVo;
import com.gulimall.auth.feign.MemberFeign;
import com.gulimall.auth.feign.ThirdPartyFeign;
import com.gulimall.auth.vo.UserLoginVo;
import com.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.bind.BindResult;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartyFeign thirdPartyFeign;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeign memberFeign;

    /**
     * @param phone
     * @return
     */
//    @ResponseBody
//    @GetMapping("/sms/sendcode")
//    public R sendCode(@RequestParam("phone") String phone) {
//        //TODO 接口防刷
//        String redisCode = redisTemplate.opsForValue().get(AuthConstant.SMS_CODE_CACHE_PREFIX + phone);
//        if (!StringUtils.isEmpty(redisCode)) {
//            long l = Long.parseLong(redisCode.split("_")[1]);
//            if (System.currentTimeMillis() - 1 < 600000) {
//                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
//            }
//        }
//        String code = UUID.randomUUID().toString().substring(0, 5) + "_" + System.currentTimeMillis();
//        //redis 缓存验证码
//        redisTemplate.opsForValue().set(AuthConstant.SMS_CODE_CACHE_PREFIX + phone, code, 10, TimeUnit.MINUTES);
//
//        thirdPartyFeign.sendCode(phone, code);
//
//        return R.ok();
//    }
    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone") String phone) {
        //TODO 1 接口防刷
        //验证码60s内
        String redisCode = redisTemplate.opsForValue().get(AuthConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60 * 1000) {
                //60s内 不能再次发送
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        //2 验证码再次校验 存kry-phone,value-code sms:code:13344445555->123456
        //取1-6位 作为验证码
        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code + "_" + System.currentTimeMillis();
        //redis缓存验证码
        redisTemplate.opsForValue().set(AuthConstant.SMS_CODE_CACHE_PREFIX + phone, substring, 10, TimeUnit.MINUTES);

        System.out.println(redisTemplate.opsForValue().get(AuthConstant.SMS_CODE_CACHE_PREFIX + phone));

        thirdPartyFeign.sendCode(phone, code);

        return R.ok();
    }


    /**
     * //TODO 重定向携带数据, 利用session原理.将数据放在session中
     * 只要跳到下一个取出这个数据之后,session里面的数据会删掉
     * <p>
     * //TODO 分布式下的session问题
     *
     * @param vo
     * @param result
     * @param redirectAttributes
     * @return
     */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes) {
        if (result.hasErrors()) {

            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));

            redirectAttributes.addFlashAttribute("errors", errors);

            //效验错误 ,转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }

        //真正的注册, 调用远程服务进行注册
        //1. 效验验证码
        String code = vo.getCode();

        String s = redisTemplate.opsForValue().get(AuthConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                //删除验证码,立牌机制
                redisTemplate.delete(AuthConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                // 验证码通过 真正注册 调用远程服务进行注册
                R r = memberFeign.regist(vo);
                if (r.getCode() == 0) {

                    return "redirect:http://auth.gulimall.com/login.html";
                } else {

                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg", r.getData("msg", new TypeReference<String>() {
                    }));
                    redirectAttributes.addFlashAttribute("errors", errors);

                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            } else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                //效验错误 ,转发到注册页
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            //效验错误 ,转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }
    }

    @GetMapping("/login.html")
    public String loginPage(HttpSession session) {

        Object attribute = session.getAttribute(AuthConstant.LOGIN_USER);
        if (attribute == null) {
            return "login";
        } else {
            return "redirect:http://gulimall.com";
        }

    }

    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session) {

        R login = memberFeign.login(vo);
        if (login.getCode() == 0) {
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthConstant.LOGIN_USER, data);
            System.out.println("登入成功" + data.toString());
            return "redirect:http://gulimall.com";
        } else {

            Map<String, String> errors = new HashMap<>();
            errors.put("msg", login.getData("msg", new TypeReference<String>() {
            }));
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
